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The usual prescription of the Zantac is 150 mg twice daily or 300 mg once a day. Taking more than these doses does not help either in the symtoms or control of the pathophysiological process. So further doses would not help you. Taking some antacid like Tums may help you in the pain.
Please feel free for your follow up questions.
Zantac is Ranitidine. The website gives information for the other medications also from the same family of the drugs like cimetidine and famotidine, which has different doses. Let me quote you the doses for ranitidine from the same resource (it is 150 and 300 mg);
It can be cut in half and it is not time released. Ideally one should wait for 24 hours but if you take it 2-3 hours early with your symptoms, it does not harm you. It does not helps you in higher doses as optimal or plateau effect comes with the 300 mg doses and any increase in the doses does not document any change in the symptomatic effect or give more advantage by its mechanism of action. It is not like more you take, more you would be benefited.
Hope this helps you.
A definite treatment is antacids only to give you relief from pain. Eating fruits like banana may help. For immediate help there is nothing else as home remedy, I am afraid.
I am sorry for this. The dose may be increased of any medication by a physician's advice. The pharmacology advices or guide us (doctors) about the doses and we do make individual variations according to the built, body weight, response and other variables. Increasing the Zantac doses can be done in the individuals by the body weight issues and that is done for the long term, not for the episodic reason. Please remember, if one take Zantac now the optimal blood levels are built up in 5-6 hours. So, if at all the doses are increased, they are done to see the long term interest.
No there are not big adverse reactions / untoward effects / side effects, but dose increase should be supervised by a doctor.
You are welcome.
It is pleasure assisting you.